Example #1
0
static int axp20x_regulator_probe(struct platform_device *pdev)
{
	struct regulator_dev *rdev;
	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
	const struct regulator_desc *regulators;
	struct regulator_config config = {
		.dev = pdev->dev.parent,
		.regmap = axp20x->regmap,
		.driver_data = axp20x,
	};
	int ret, i, nregulators;
	u32 workmode;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		regulators = axp20x_regulators;
		nregulators = AXP20X_REG_ID_MAX;
		break;
	case AXP221_ID:
		regulators = axp22x_regulators;
		nregulators = AXP22X_REG_ID_MAX;
		break;
	default:
		dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
			axp20x->variant);
		return -EINVAL;
	}

	/* This only sets the dcdc freq. Ignore any errors */
	axp20x_regulator_parse_dt(pdev);

	for (i = 0; i < nregulators; i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register %s\n",
				regulators[i].name);

			return PTR_ERR(rdev);
		}

		ret = of_property_read_u32(rdev->dev.of_node,
					   "x-powers,dcdc-workmode",
					   &workmode);
		if (!ret) {
			if (axp20x_set_dcdc_workmode(rdev, i, workmode))
				dev_err(&pdev->dev, "Failed to set workmode on %s\n",
					rdev->desc->name);
		}
	}

	return 0;
}

static struct platform_driver axp20x_regulator_driver = {
	.probe	= axp20x_regulator_probe,
	.driver	= {
		.name		= "axp20x-regulator",
	},
};

module_platform_driver(axp20x_regulator_driver);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Carlo Caione <*****@*****.**>");
MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
MODULE_ALIAS("platform:axp20x-regulator");
/*
 * keypad controller should be initialized in the following sequence
 * only, otherwise it might get into FSM stuck state.
 *
 * - Initialize keypad control parameters, like no. of rows, columns,
 *   timing values etc.,
 * - configure rows and column gpios pull up/down.
 * - set irq edge type.
 * - enable the keypad controller.
 */
static int __devinit pmic8xxx_kp_probe(struct platform_device *pdev)
{
	const struct pm8xxx_keypad_platform_data *pdata =
					dev_get_platdata(&pdev->dev);
	const struct matrix_keymap_data *keymap_data;
	struct pmic8xxx_kp *kp;
	int rc;
	u8 ctrl_val;

	struct pm_gpio kypd_drv = {
		.direction	= PM_GPIO_DIR_OUT,
		.output_buffer	= PM_GPIO_OUT_BUF_OPEN_DRAIN,
		.output_value	= 0,
		.pull		= PM_GPIO_PULL_NO,
		.vin_sel	= PM_GPIO_VIN_S4,
		.out_strength	= PM_GPIO_STRENGTH_LOW,
		.function	= PM_GPIO_FUNC_1,
		.inv_int_pol	= 1,
	};

	struct pm_gpio kypd_sns = {
		.direction	= PM_GPIO_DIR_IN,
		.pull		= PM_GPIO_PULL_UP_31P5,
		.vin_sel	= PM_GPIO_VIN_S4,
		.out_strength	= PM_GPIO_STRENGTH_NO,
		.function	= PM_GPIO_FUNC_NORMAL,
		.inv_int_pol	= 1,
	};


	if (!pdata || !pdata->num_cols || !pdata->num_rows ||
		pdata->num_cols > PM8XXX_MAX_COLS ||
		pdata->num_rows > PM8XXX_MAX_ROWS ||
		pdata->num_cols < PM8XXX_MIN_COLS) {
		dev_err(&pdev->dev, "invalid platform data\n");
		return -EINVAL;
	}

	if (!pdata->scan_delay_ms ||
		pdata->scan_delay_ms > MAX_SCAN_DELAY ||
		pdata->scan_delay_ms < MIN_SCAN_DELAY ||
		!is_power_of_2(pdata->scan_delay_ms)) {
		dev_err(&pdev->dev, "invalid keypad scan time supplied\n");
		return -EINVAL;
	}

	if (!pdata->row_hold_ns ||
		pdata->row_hold_ns > MAX_ROW_HOLD_DELAY ||
		pdata->row_hold_ns < MIN_ROW_HOLD_DELAY ||
		((pdata->row_hold_ns % MIN_ROW_HOLD_DELAY) != 0)) {
		dev_err(&pdev->dev, "invalid keypad row hold time supplied\n");
		return -EINVAL;
	}

	if (!pdata->debounce_ms ||
		((pdata->debounce_ms % 5) != 0) ||
		pdata->debounce_ms > MAX_DEBOUNCE_TIME ||
		pdata->debounce_ms < MIN_DEBOUNCE_TIME) {
		dev_err(&pdev->dev, "invalid debounce time supplied\n");
		return -EINVAL;
	}

	keymap_data = pdata->keymap_data;
	if (!keymap_data) {
		dev_err(&pdev->dev, "no keymap data supplied\n");
		return -EINVAL;
	}

	kp = kzalloc(sizeof(*kp), GFP_KERNEL);
	if (!kp)
		return -ENOMEM;

	platform_set_drvdata(pdev, kp);

	kp->pdata	= pdata;
	kp->dev		= &pdev->dev;

	kp->input = input_allocate_device();
	if (!kp->input) {
		dev_err(&pdev->dev, "unable to allocate input device\n");
		rc = -ENOMEM;
		goto err_alloc_device;
	}

	kp->key_sense_irq = platform_get_irq(pdev, 0);
	if (kp->key_sense_irq < 0) {
		dev_err(&pdev->dev, "unable to get keypad sense irq\n");
		rc = -ENXIO;
		goto err_get_irq;
	}

	kp->key_stuck_irq = platform_get_irq(pdev, 1);
	if (kp->key_stuck_irq < 0) {
		dev_err(&pdev->dev, "unable to get keypad stuck irq\n");
		rc = -ENXIO;
		goto err_get_irq;
	}

	kp->input->name = pdata->input_name ? : "PMIC8XXX keypad";
	kp->input->phys = pdata->input_phys_device ? : "pmic8xxx_keypad/input0";

	kp->input->dev.parent	= &pdev->dev;

	kp->input->id.bustype	= BUS_I2C;
	kp->input->id.version	= 0x0001;
	kp->input->id.product	= 0x0001;
	kp->input->id.vendor	= 0x0001;

	kp->input->evbit[0]	= BIT_MASK(EV_KEY);

	if (pdata->rep)
		__set_bit(EV_REP, kp->input->evbit);

	kp->input->keycode	= kp->keycodes;
	kp->input->keycodemax	= PM8XXX_MATRIX_MAX_SIZE;
	kp->input->keycodesize	= sizeof(kp->keycodes);
	kp->input->open		= pmic8xxx_kp_open;
	kp->input->close	= pmic8xxx_kp_close;

	matrix_keypad_build_keymap(keymap_data, PM8XXX_ROW_SHIFT,
					kp->input->keycode, kp->input->keybit);

	input_set_capability(kp->input, EV_MSC, MSC_SCAN);
	input_set_drvdata(kp->input, kp);

	/* initialize keypad state */
	memset(kp->keystate, 0xff, sizeof(kp->keystate));
	memset(kp->stuckstate, 0xff, sizeof(kp->stuckstate));

	rc = pmic8xxx_kpd_init(kp);
	if (rc < 0) {
		dev_err(&pdev->dev, "unable to initialize keypad controller\n");
		goto err_get_irq;
	}

	rc = pmic8xxx_kp_config_gpio(pdata->cols_gpio_start,
					pdata->num_cols, kp, &kypd_sns);
	if (rc < 0) {
		dev_err(&pdev->dev, "unable to configure keypad sense lines\n");
		goto err_gpio_config;
	}

	rc = pmic8xxx_kp_config_gpio(pdata->rows_gpio_start,
					pdata->num_rows, kp, &kypd_drv);
	if (rc < 0) {
		dev_err(&pdev->dev, "unable to configure keypad drive lines\n");
		goto err_gpio_config;
	}

	rc = request_any_context_irq(kp->key_sense_irq, pmic8xxx_kp_irq,
				 IRQF_TRIGGER_RISING, "pmic-keypad", kp);
	if (rc < 0) {
		dev_err(&pdev->dev, "failed to request keypad sense irq\n");
		goto err_get_irq;
	}

	rc = request_any_context_irq(kp->key_stuck_irq, pmic8xxx_kp_stuck_irq,
				 IRQF_TRIGGER_RISING, "pmic-keypad-stuck", kp);
	if (rc < 0) {
		dev_err(&pdev->dev, "failed to request keypad stuck irq\n");
		goto err_req_stuck_irq;
	}

	rc = pmic8xxx_kp_read_u8(kp, &ctrl_val, KEYP_CTRL);
	if (rc < 0) {
		dev_err(&pdev->dev, "failed to read KEYP_CTRL register\n");
		goto err_pmic_reg_read;
	}

	kp->ctrl_reg = ctrl_val;

	rc = input_register_device(kp->input);
	if (rc < 0) {
		dev_err(&pdev->dev, "unable to register keypad input device\n");
		goto err_pmic_reg_read;
	}

	device_init_wakeup(&pdev->dev, pdata->wakeup);
#if defined(CONFIG_MACH_KS02)
	/*sysfs*/
	kp->sec_keypad = device_create(sec_class, NULL, 0, kp, "sec_keypad");
	if (IS_ERR(kp->sec_keypad))
		dev_err(&pdev->dev, "Failed to create sec_key device\n");

	rc = sysfs_create_group(&kp->sec_keypad->kobj, &key_attr_group);
	if (rc) {
		dev_err(&pdev->dev, "Failed to create the test sysfs: %d\n",
			rc);
	}
#endif
	return 0;

err_pmic_reg_read:
	free_irq(kp->key_stuck_irq, kp);
err_req_stuck_irq:
	free_irq(kp->key_sense_irq, kp);
err_gpio_config:
err_get_irq:
	input_free_device(kp->input);
err_alloc_device:
	platform_set_drvdata(pdev, NULL);
	kfree(kp);
	return rc;
}

static int __devexit pmic8xxx_kp_remove(struct platform_device *pdev)
{
	struct pmic8xxx_kp *kp = platform_get_drvdata(pdev);

	device_init_wakeup(&pdev->dev, 0);
	free_irq(kp->key_stuck_irq, kp);
	free_irq(kp->key_sense_irq, kp);
	input_unregister_device(kp->input);
	kfree(kp);

	platform_set_drvdata(pdev, NULL);
	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int pmic8xxx_kp_suspend(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct pmic8xxx_kp *kp = platform_get_drvdata(pdev);
	struct input_dev *input_dev = kp->input;

	if (device_may_wakeup(dev)) {
		enable_irq_wake(kp->key_sense_irq);
	} else {
		mutex_lock(&input_dev->mutex);

		if (input_dev->users)
			pmic8xxx_kp_disable(kp);

		mutex_unlock(&input_dev->mutex);
	}

	key_suspend = 1;

	return 0;
}

static int pmic8xxx_kp_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct pmic8xxx_kp *kp = platform_get_drvdata(pdev);
	struct input_dev *input_dev = kp->input;

	if (device_may_wakeup(dev)) {
		disable_irq_wake(kp->key_sense_irq);
	} else {
		mutex_lock(&input_dev->mutex);

		if (input_dev->users)
			pmic8xxx_kp_enable(kp);

		mutex_unlock(&input_dev->mutex);
	}

	key_suspend = 0;

	return 0;
}
#endif

static SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops,
			 pmic8xxx_kp_suspend, pmic8xxx_kp_resume);

static struct platform_driver pmic8xxx_kp_driver = {
	.probe		= pmic8xxx_kp_probe,
	.remove		= __devexit_p(pmic8xxx_kp_remove),
	.driver		= {
		.name = PM8XXX_KEYPAD_DEV_NAME,
		.owner = THIS_MODULE,
		.pm = &pm8xxx_kp_pm_ops,
	},
};
module_platform_driver(pmic8xxx_kp_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("PMIC8XXX keypad driver");
MODULE_VERSION("1.0");
MODULE_ALIAS("platform:pmic8xxx_keypad");
MODULE_AUTHOR("Trilok Soni <*****@*****.**>");
static long rdc321x_wdt_ioctl(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	void __user *argp = (void __user *)arg;
	u32 value;
	static const struct watchdog_info ident = {
		.options = WDIOF_CARDRESET,
		.identity = "RDC321x WDT",
	};
	unsigned long flags;

	switch (cmd) {
	case WDIOC_KEEPALIVE:
		rdc321x_wdt_reset();
		break;
	case WDIOC_GETSTATUS:
		/*                                       */
		spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
		pci_read_config_dword(rdc321x_wdt_device.sb_pdev,
					rdc321x_wdt_device.base_reg, &value);
		spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
		if (copy_to_user(argp, &value, sizeof(u32)))
			return -EFAULT;
		break;
	case WDIOC_GETSUPPORT:
		if (copy_to_user(argp, &ident, sizeof(ident)))
			return -EFAULT;
		break;
	case WDIOC_SETOPTIONS:
		if (copy_from_user(&value, argp, sizeof(int)))
			return -EFAULT;
		switch (value) {
		case WDIOS_ENABLECARD:
			rdc321x_wdt_start();
			break;
		case WDIOS_DISABLECARD:
			return rdc321x_wdt_stop();
		default:
			return -EINVAL;
		}
		break;
	default:
		return -ENOTTY;
	}
	return 0;
}

static ssize_t rdc321x_wdt_write(struct file *file, const char __user *buf,
				size_t count, loff_t *ppos)
{
	if (!count)
		return -EIO;

	rdc321x_wdt_reset();

	return count;
}

static const struct file_operations rdc321x_wdt_fops = {
	.owner		= THIS_MODULE,
	.llseek		= no_llseek,
	.unlocked_ioctl	= rdc321x_wdt_ioctl,
	.open		= rdc321x_wdt_open,
	.write		= rdc321x_wdt_write,
	.release	= rdc321x_wdt_release,
};

static struct miscdevice rdc321x_wdt_misc = {
	.minor	= WATCHDOG_MINOR,
	.name	= "watchdog",
	.fops	= &rdc321x_wdt_fops,
};

static int __devinit rdc321x_wdt_probe(struct platform_device *pdev)
{
	int err;
	struct resource *r;
	struct rdc321x_wdt_pdata *pdata;

	pdata = pdev->dev.platform_data;
	if (!pdata) {
		dev_err(&pdev->dev, "no platform data supplied\n");
		return -ENODEV;
	}

	r = platform_get_resource_byname(pdev, IORESOURCE_IO, "wdt-reg");
	if (!r) {
		dev_err(&pdev->dev, "failed to get wdt-reg resource\n");
		return -ENODEV;
	}

	rdc321x_wdt_device.sb_pdev = pdata->sb_pdev;
	rdc321x_wdt_device.base_reg = r->start;

	err = misc_register(&rdc321x_wdt_misc);
	if (err < 0) {
		dev_err(&pdev->dev, "misc_register failed\n");
		return err;
	}

	spin_lock_init(&rdc321x_wdt_device.lock);

	/*                    */
	pci_write_config_dword(rdc321x_wdt_device.sb_pdev,
				rdc321x_wdt_device.base_reg, RDC_WDT_RST);

	init_completion(&rdc321x_wdt_device.stop);
	rdc321x_wdt_device.queue = 0;

	clear_bit(0, &rdc321x_wdt_device.inuse);

	setup_timer(&rdc321x_wdt_device.timer, rdc321x_wdt_trigger, 0);

	rdc321x_wdt_device.default_ticks = ticks;

	dev_info(&pdev->dev, "watchdog init success\n");

	return 0;
}

static int __devexit rdc321x_wdt_remove(struct platform_device *pdev)
{
	if (rdc321x_wdt_device.queue) {
		rdc321x_wdt_device.queue = 0;
		wait_for_completion(&rdc321x_wdt_device.stop);
	}

	misc_deregister(&rdc321x_wdt_misc);

	return 0;
}

static struct platform_driver rdc321x_wdt_driver = {
	.probe = rdc321x_wdt_probe,
	.remove = __devexit_p(rdc321x_wdt_remove),
	.driver = {
		.owner = THIS_MODULE,
		.name = "rdc321x-wdt",
	},
};

module_platform_driver(rdc321x_wdt_driver);

MODULE_AUTHOR("Florian Fainelli <*****@*****.**>");
MODULE_DESCRIPTION("RDC321x watchdog driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
static long mtx1_wdt_ioctl(struct file *file, unsigned int cmd,
							unsigned long arg)
{
	void __user *argp = (void __user *)arg;
	int __user *p = (int __user *)argp;
	unsigned int value;
	static const struct watchdog_info ident = {
		.options = WDIOF_CARDRESET,
		.identity = "MTX-1 WDT",
	};

	switch (cmd) {
	case WDIOC_GETSUPPORT:
		if (copy_to_user(argp, &ident, sizeof(ident)))
			return -EFAULT;
		break;
	case WDIOC_GETSTATUS:
	case WDIOC_GETBOOTSTATUS:
		put_user(0, p);
		break;
	case WDIOC_SETOPTIONS:
		if (get_user(value, p))
			return -EFAULT;
		if (value & WDIOS_ENABLECARD)
			mtx1_wdt_start();
		else if (value & WDIOS_DISABLECARD)
			mtx1_wdt_stop();
		else
			return -EINVAL;
		return 0;
	case WDIOC_KEEPALIVE:
		mtx1_wdt_reset();
		break;
	default:
		return -ENOTTY;
	}
	return 0;
}


static ssize_t mtx1_wdt_write(struct file *file, const char *buf,
						size_t count, loff_t *ppos)
{
	if (!count)
		return -EIO;
	mtx1_wdt_reset();
	return count;
}

static const struct file_operations mtx1_wdt_fops = {
	.owner		= THIS_MODULE,
	.llseek		= no_llseek,
	.unlocked_ioctl	= mtx1_wdt_ioctl,
	.open		= mtx1_wdt_open,
	.write		= mtx1_wdt_write,
	.release	= mtx1_wdt_release,
};


static struct miscdevice mtx1_wdt_misc = {
	.minor	= WATCHDOG_MINOR,
	.name	= "watchdog",
	.fops	= &mtx1_wdt_fops,
};


static int __devinit mtx1_wdt_probe(struct platform_device *pdev)
{
	int ret;

	mtx1_wdt_device.gpio = pdev->resource[0].start;
	ret = gpio_request_one(mtx1_wdt_device.gpio,
				GPIOF_OUT_INIT_HIGH, "mtx1-wdt");
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to request gpio");
		return ret;
	}

	spin_lock_init(&mtx1_wdt_device.lock);
	init_completion(&mtx1_wdt_device.stop);
	mtx1_wdt_device.queue = 0;
	clear_bit(0, &mtx1_wdt_device.inuse);
	setup_timer(&mtx1_wdt_device.timer, mtx1_wdt_trigger, 0L);
	mtx1_wdt_device.default_ticks = ticks;

	ret = misc_register(&mtx1_wdt_misc);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to register\n");
		return ret;
	}
	mtx1_wdt_start();
	dev_info(&pdev->dev, "MTX-1 Watchdog driver\n");
	return 0;
}

static int __devexit mtx1_wdt_remove(struct platform_device *pdev)
{
	/* FIXME: do we need to lock this test ? */
	if (mtx1_wdt_device.queue) {
		mtx1_wdt_device.queue = 0;
		wait_for_completion(&mtx1_wdt_device.stop);
	}

	gpio_free(mtx1_wdt_device.gpio);
	misc_deregister(&mtx1_wdt_misc);
	return 0;
}

static struct platform_driver mtx1_wdt_driver = {
	.probe = mtx1_wdt_probe,
	.remove = __devexit_p(mtx1_wdt_remove),
	.driver.name = "mtx1-wdt",
	.driver.owner = THIS_MODULE,
};

module_platform_driver(mtx1_wdt_driver);

MODULE_AUTHOR("Michael Stickel, Florian Fainelli");
MODULE_DESCRIPTION("Driver for the MTX-1 watchdog");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
MODULE_ALIAS("platform:mtx1-wdt");
Example #5
0
File: ixp4xx.c Project: 3null/linux
static int ixp4xx_flash_probe(struct platform_device *dev)
{
	struct flash_platform_data *plat = dev_get_platdata(&dev->dev);
	struct ixp4xx_flash_info *info;
	struct mtd_part_parser_data ppdata = {
		.origin = dev->resource->start,
	};
	int err = -1;

	if (!plat)
		return -ENODEV;

	if (plat->init) {
		err = plat->init();
		if (err)
			return err;
	}

	info = devm_kzalloc(&dev->dev, sizeof(struct ixp4xx_flash_info),
			    GFP_KERNEL);
	if(!info) {
		err = -ENOMEM;
		goto Error;
	}

	platform_set_drvdata(dev, info);

	/*
	 * Tell the MTD layer we're not 1:1 mapped so that it does
	 * not attempt to do a direct access on us.
	 */
	info->map.phys = NO_XIP;
	info->map.size = resource_size(dev->resource);

	/*
	 * We only support 16-bit accesses for now. If and when
	 * any board use 8-bit access, we'll fixup the driver to
	 * handle that.
	 */
	info->map.bankwidth = 2;
	info->map.name = dev_name(&dev->dev);
	info->map.read = ixp4xx_read16;
	info->map.write = ixp4xx_probe_write16;
	info->map.copy_from = ixp4xx_copy_from;

	info->map.virt = devm_ioremap_resource(&dev->dev, dev->resource);
	if (IS_ERR(info->map.virt)) {
		err = PTR_ERR(info->map.virt);
		goto Error;
	}

	info->mtd = do_map_probe(plat->map_name, &info->map);
	if (!info->mtd) {
		printk(KERN_ERR "IXP4XXFlash: map_probe failed\n");
		err = -ENXIO;
		goto Error;
	}
	info->mtd->owner = THIS_MODULE;

	/* Use the fast version */
	info->map.write = ixp4xx_write16;

	err = mtd_device_parse_register(info->mtd, probes, &ppdata,
			plat->parts, plat->nr_parts);
	if (err) {
		printk(KERN_ERR "Could not parse partitions\n");
		goto Error;
	}

	return 0;

Error:
	ixp4xx_flash_remove(dev);
	return err;
}

static struct platform_driver ixp4xx_flash_driver = {
	.probe		= ixp4xx_flash_probe,
	.remove		= ixp4xx_flash_remove,
	.driver		= {
		.name	= "IXP4XX-Flash",
		.owner	= THIS_MODULE,
	},
};

module_platform_driver(ixp4xx_flash_driver);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("MTD map driver for Intel IXP4xx systems");
MODULE_AUTHOR("Deepak Saxena");
MODULE_ALIAS("platform:IXP4XX-Flash");
Example #6
0
static int axp20x_regulator_probe(struct platform_device *pdev)
{
	struct regulator_dev *rdev;
	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
	const struct regulator_desc *regulators;
	struct regulator_config config = {
		.dev = pdev->dev.parent,
		.regmap = axp20x->regmap,
		.driver_data = axp20x,
	};
	int ret, i, nregulators;
	u32 workmode;
	const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
	const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
	bool drivevbus = false;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		regulators = axp20x_regulators;
		nregulators = AXP20X_REG_ID_MAX;
		break;
	case AXP221_ID:
	case AXP223_ID:
		regulators = axp22x_regulators;
		nregulators = AXP22X_REG_ID_MAX;
		drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
						  "x-powers,drive-vbus-en");
		break;
	case AXP809_ID:
		regulators = axp809_regulators;
		nregulators = AXP809_REG_ID_MAX;
		break;
	default:
		dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
			axp20x->variant);
		return -EINVAL;
	}

	/* This only sets the dcdc freq. Ignore any errors */
	axp20x_regulator_parse_dt(pdev);

	for (i = 0; i < nregulators; i++) {
		const struct regulator_desc *desc = &regulators[i];
		struct regulator_desc *new_desc;

		/*
		 * Regulators DC1SW and DC5LDO are connected internally,
		 * so we have to handle their supply names separately.
		 *
		 * We always register the regulators in proper sequence,
		 * so the supply names are correctly read. See the last
		 * part of this loop to see where we save the DT defined
		 * name.
		 */
		if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
		    (regulators == axp809_regulators && i == AXP809_DC1SW)) {
			new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
						GFP_KERNEL);
			*new_desc = regulators[i];
			new_desc->supply_name = dcdc1_name;
			desc = new_desc;
		}

		if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
		    (regulators == axp809_regulators && i == AXP809_DC5LDO)) {
			new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
						GFP_KERNEL);
			*new_desc = regulators[i];
			new_desc->supply_name = dcdc5_name;
			desc = new_desc;
		}

		rdev = devm_regulator_register(&pdev->dev, desc, &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register %s\n",
				regulators[i].name);

			return PTR_ERR(rdev);
		}

		ret = of_property_read_u32(rdev->dev.of_node,
					   "x-powers,dcdc-workmode",
					   &workmode);
		if (!ret) {
			if (axp20x_set_dcdc_workmode(rdev, i, workmode))
				dev_err(&pdev->dev, "Failed to set workmode on %s\n",
					rdev->desc->name);
		}

		/*
		 * Save AXP22X DCDC1 / DCDC5 regulator names for later.
		 */
		if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
		    (regulators == axp809_regulators && i == AXP809_DCDC1))
			of_property_read_string(rdev->dev.of_node,
						"regulator-name",
						&dcdc1_name);

		if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
		    (regulators == axp809_regulators && i == AXP809_DCDC5))
			of_property_read_string(rdev->dev.of_node,
						"regulator-name",
						&dcdc5_name);
	}

	if (drivevbus) {
		/* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
		regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
				   AXP22X_MISC_N_VBUSEN_FUNC, 0);
		rdev = devm_regulator_register(&pdev->dev,
					       &axp22x_drivevbus_regulator,
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register drivevbus\n");
			return PTR_ERR(rdev);
		}
	}

	return 0;
}

static struct platform_driver axp20x_regulator_driver = {
	.probe	= axp20x_regulator_probe,
	.driver	= {
		.name		= "axp20x-regulator",
	},
};

module_platform_driver(axp20x_regulator_driver);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Carlo Caione <*****@*****.**>");
MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
MODULE_ALIAS("platform:axp20x-regulator");
Example #7
0
/*
 * sysfs hook function
 */
static ssize_t madc_read(struct device *dev,
			 struct device_attribute *devattr, char *buf)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct twl4030_madc_request req = {
		.channels = 1 << attr->index,
		.method = TWL4030_MADC_SW2,
		.type = TWL4030_MADC_WAIT,
	};
	long val;

	val = twl4030_madc_conversion(&req);
	if (val < 0)
		return val;

	return sprintf(buf, "%d\n", req.rbuf[attr->index]);
}

/* sysfs nodes to read individual channels from user side */
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, madc_read, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, madc_read, NULL, 1);
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, madc_read, NULL, 2);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, madc_read, NULL, 3);
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, madc_read, NULL, 4);
static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, madc_read, NULL, 5);
static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, madc_read, NULL, 6);
static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, madc_read, NULL, 7);
static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, madc_read, NULL, 8);
static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, madc_read, NULL, 9);
static SENSOR_DEVICE_ATTR(curr10_input, S_IRUGO, madc_read, NULL, 10);
static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, madc_read, NULL, 11);
static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, madc_read, NULL, 12);
static SENSOR_DEVICE_ATTR(in15_input, S_IRUGO, madc_read, NULL, 15);

static struct attribute *twl4030_madc_attrs[] = {
	&sensor_dev_attr_in0_input.dev_attr.attr,
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_in2_input.dev_attr.attr,
	&sensor_dev_attr_in3_input.dev_attr.attr,
	&sensor_dev_attr_in4_input.dev_attr.attr,
	&sensor_dev_attr_in5_input.dev_attr.attr,
	&sensor_dev_attr_in6_input.dev_attr.attr,
	&sensor_dev_attr_in7_input.dev_attr.attr,
	&sensor_dev_attr_in8_input.dev_attr.attr,
	&sensor_dev_attr_in9_input.dev_attr.attr,
	&sensor_dev_attr_curr10_input.dev_attr.attr,
	&sensor_dev_attr_in11_input.dev_attr.attr,
	&sensor_dev_attr_in12_input.dev_attr.attr,
	&sensor_dev_attr_in15_input.dev_attr.attr,
	NULL
};
ATTRIBUTE_GROUPS(twl4030_madc);

static int twl4030_madc_hwmon_probe(struct platform_device *pdev)
{
	struct device *hwmon;

	hwmon = devm_hwmon_device_register_with_groups(&pdev->dev,
						       "twl4030_madc", NULL,
						       twl4030_madc_groups);
	return PTR_ERR_OR_ZERO(hwmon);
}

static struct platform_driver twl4030_madc_hwmon_driver = {
	.probe = twl4030_madc_hwmon_probe,
	.driver = {
		   .name = "twl4030_madc_hwmon",
		   .owner = THIS_MODULE,
		   },
};

module_platform_driver(twl4030_madc_hwmon_driver);

MODULE_DESCRIPTION("TWL4030 ADC Hwmon driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("J Keerthy");
MODULE_ALIAS("platform:twl4030_madc_hwmon");
Example #8
0
static int micro_bl_update_status(struct backlight_device *bd)
{
	struct ipaq_micro *micro = dev_get_drvdata(&bd->dev);
	int intensity = bd->props.brightness;
	struct ipaq_micro_msg msg = {
		.id = MSG_BACKLIGHT,
		.tx_len = 3,
	};

	if (bd->props.power != FB_BLANK_UNBLANK)
		intensity = 0;
	if (bd->props.state & (BL_CORE_FBBLANK | BL_CORE_SUSPENDED))
		intensity = 0;

	/*
	 * Message format:
	 * Byte 0: backlight instance (usually 1)
	 * Byte 1: on/off
	 * Byte 2: intensity, 0-255
	 */
	msg.tx_data[0] = 0x01;
	msg.tx_data[1] = intensity > 0 ? 1 : 0;
	msg.tx_data[2] = intensity;
	return ipaq_micro_tx_msg_sync(micro, &msg);
}

static const struct backlight_ops micro_bl_ops = {
	.options = BL_CORE_SUSPENDRESUME,
	.update_status  = micro_bl_update_status,
};

static struct backlight_properties micro_bl_props = {
	.type = BACKLIGHT_RAW,
	.max_brightness = 255,
	.power = FB_BLANK_UNBLANK,
	.brightness = 64,
};

static int micro_backlight_probe(struct platform_device *pdev)
{
	struct backlight_device *bd;
	struct ipaq_micro *micro = dev_get_drvdata(pdev->dev.parent);

	bd = devm_backlight_device_register(&pdev->dev, "ipaq-micro-backlight",
					    &pdev->dev, micro, &micro_bl_ops,
					    &micro_bl_props);
	if (IS_ERR(bd))
		return PTR_ERR(bd);

	platform_set_drvdata(pdev, bd);
	backlight_update_status(bd);

	return 0;
}

static struct platform_driver micro_backlight_device_driver = {
	.driver = {
		.name    = "ipaq-micro-backlight",
	},
	.probe   = micro_backlight_probe,
};
module_platform_driver(micro_backlight_device_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("driver for iPAQ Atmel micro backlight");
MODULE_ALIAS("platform:ipaq-micro-backlight");
Example #9
0
static int micro_leds_brightness_set(struct led_classdev *led_cdev,
				      enum led_brightness value)
{
	struct ipaq_micro *micro = dev_get_drvdata(led_cdev->dev->parent->parent);
	/*
	 * In this message:
	 * Byte 0 = LED color: 0 = yellow, 1 = green
	 *          yellow LED is always ~30 blinks per minute
	 * Byte 1 = duration (flags?) appears to be ignored
	 * Byte 2 = green ontime in 1/10 sec (deciseconds)
	 *          1 = 1/10 second
	 *          0 = 256/10 second
	 * Byte 3 = green offtime in 1/10 sec (deciseconds)
	 *          1 = 1/10 second
	 *          0 = 256/10 seconds
	 */
	struct ipaq_micro_msg msg = {
		.id = MSG_NOTIFY_LED,
		.tx_len = 4,
	};

	msg.tx_data[0] = LED_GREEN;
	msg.tx_data[1] = 0;
	if (value) {
		msg.tx_data[2] = 0; /* Duty cycle 256 */
		msg.tx_data[3] = 1;
	} else {
		msg.tx_data[2] = 1;
		msg.tx_data[3] = 0; /* Duty cycle 256 */
	}
	return ipaq_micro_tx_msg_sync(micro, &msg);
}

/* Maximum duty cycle in ms 256/10 sec = 25600 ms */
#define IPAQ_LED_MAX_DUTY 25600

static int micro_leds_blink_set(struct led_classdev *led_cdev,
				unsigned long *delay_on,
				unsigned long *delay_off)
{
	struct ipaq_micro *micro = dev_get_drvdata(led_cdev->dev->parent->parent);
	/*
	 * In this message:
	 * Byte 0 = LED color: 0 = yellow, 1 = green
	 *          yellow LED is always ~30 blinks per minute
	 * Byte 1 = duration (flags?) appears to be ignored
	 * Byte 2 = green ontime in 1/10 sec (deciseconds)
	 *          1 = 1/10 second
	 *          0 = 256/10 second
	 * Byte 3 = green offtime in 1/10 sec (deciseconds)
	 *          1 = 1/10 second
	 *          0 = 256/10 seconds
	 */
	struct ipaq_micro_msg msg = {
		.id = MSG_NOTIFY_LED,
		.tx_len = 4,
	};

	msg.tx_data[0] = LED_GREEN;
	if (*delay_on > IPAQ_LED_MAX_DUTY ||
	    *delay_off > IPAQ_LED_MAX_DUTY)
		return -EINVAL;

	if (*delay_on == 0 && *delay_off == 0) {
		*delay_on = 100;
		*delay_off = 100;
	}

	msg.tx_data[1] = 0;
	if (*delay_on >= IPAQ_LED_MAX_DUTY)
		msg.tx_data[2] = 0;
	else
		msg.tx_data[2] = (u8) DIV_ROUND_CLOSEST(*delay_on, 100);
	if (*delay_off >= IPAQ_LED_MAX_DUTY)
		msg.tx_data[3] = 0;
	else
		msg.tx_data[3] = (u8) DIV_ROUND_CLOSEST(*delay_off, 100);
	return ipaq_micro_tx_msg_sync(micro, &msg);
}

static struct led_classdev micro_led = {
	.name			= "led-ipaq-micro",
	.brightness_set_blocking = micro_leds_brightness_set,
	.blink_set		= micro_leds_blink_set,
	.flags			= LED_CORE_SUSPENDRESUME,
};

static int micro_leds_probe(struct platform_device *pdev)
{
	int ret;

	ret = devm_led_classdev_register(&pdev->dev, &micro_led);
	if (ret) {
		dev_err(&pdev->dev, "registering led failed: %d\n", ret);
		return ret;
	}
	dev_info(&pdev->dev, "iPAQ micro notification LED driver\n");

	return 0;
}

static struct platform_driver micro_leds_device_driver = {
	.driver = {
		.name    = "ipaq-micro-leds",
	},
	.probe   = micro_leds_probe,
};
module_platform_driver(micro_leds_device_driver);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("driver for iPAQ Atmel micro leds");
MODULE_ALIAS("platform:ipaq-micro-leds");